How do you know if your child has autism? Hopefully this video will shed some light on that discussion. Also, please read the disclaimer at the end of the video for more context. I did make a little mistake in the order of the wording, and meant to say when kids are old enough to tell how they are developing, yet young enough for early intervention and so on. So just switch the order of old and young and it will make more sense. For answers to questions about this video, go here: